What are the several ways to introduce JavaScript?

Introduction method: 1. External introduction, the syntax is ""; 2. Inline introduction, the syntax is ""; 3. Inline introduction, the syntax is " ".

The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.

What are the several ways to introduce JavaScript

This is how to introduce Javascript externally. Remember to write the script tag inside the head tag.

This is how to write embedded Javascript. Remember to write the script tag inside the head tag.

This is the way to write Javascript inline.

In the alert statement, HTML generally uses single quotes, and Javascript generally uses double quotes.

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